The Three Seas Region Economy in Figures

30 June 2021

The Three Seas Region is developing very dynamically, as is evidenced by data contained in the report entitled ‘Building Closer Connections. The Three Seas Region as an Economic Area’ prepared by the Polish Economic Institute.

In the years 2004-2019, Polish economy was the fastest-growing economy in the Three Seas Region. Average development rate in those years was 5.3%.

In 2004, the percentage share of GDP generated by the 3SI countries in the European Union GDP was 15%. In 2018, the Three Seas Region generated 19% of UE’s GDP.

The volume of trade of the Three Seas Initiative countries in the years 2004-2018 increased by as much as 243%!

The total value of capitalization of stock exchanges from the 3SI Region in 2018 amounted to 347 billion EUR.

In the years 2014-2020, the value of transport, energy and digital projects financed by the EU and carried out in the Three Seas countries reached 80 billion EUR.

Five out of nine corridors of the Trans-European Transport Network (TEN-T) pass through the Three Seas Region.

Source: "W kierunku budowy bliższych powiązań. Trójmorze jako obszar gospodarczy" [‘Building Closer Connections. The Three Seas Region as an Economic Area’], Polski Instytut Ekonomiczny [Polish Economic Institute]

CONGRESS 2026 AGENDA

08 May 2026

Three Seas Initiative Summit in Dubrovnik

30 April 2026

Parliamentary Summit of the Three Seas Initiative in Zagreb

26 March 2026

Rada Programowa Samorządowego Kongresu Trójmorza 2026

20 March 2026

Krok w stronę rozszerzenia Inicjatywy Trójmorza

12 March 2026

About the Three Seas Initiative in Davos

23 January 2026

Registration for the 6th Three Seas Local Government Congress is now open

21 January 2026

A visit to Slovakia by President Karol Nawrocki

07 November 2025

The Three Seas Local Government Congress under the Honorary Patronage of the President of Poland

03 November 2025

The Three Seas Local Government Congress under the Honorary Patronage of the President of Poland

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03 November 2025

The 6 th edition of the Three Seas Local Government Congress will be held May 27-28, 2026, under the Honorary Patronage of the President of the Republic of Poland, Karol Nawrocki. This distinction recognises the growing importance of the event, which has become a key platform for cooperation among the countries of Central and Eastern Europe, both in the economic and infrastructural dimensions.

Over five editions of the Congress (2020–2025), more than 5,000 participants from 24 countries have taken part, 104 discussion panels have been held, and 64 foreign delegations have visited Lublin. The scale and international character of the event confirm its increasing role in shaping dialogue across the Three Seas region.

We, the countries representing Central and Eastern Europe (…) through the Three Seas Initiative, Via Baltica, and Via Carpatia, share not only our voice and vision of building a civic community, but also tangible results showing that the Baltic States and the countries of Central and Eastern Europe are capable of implementing major infrastructure projects, emphasised President Karol Nawrocki during his visit to Vilnius last month.

These words perfectly capture the spirit of the Three Seas Congress, which brings together political, academic, and business communities around a shared goal, building a strong, integrated, and cooperative Central and Eastern Europe.

It is also worth noting that in April 2025, Poland hosted the 10th Three Seas Initiative Summit. During the event, participants emphasised the importance of infrastructure and economic cooperation in the region and the need to strengthen cohesion across Central and Eastern Europe. This year, the cooperation format has been expanded to include new members – Albania and Montenegro joined the Three Seas Initiative in the capacity of associated participating states, while Spain and Turkey became new strategic partners. It has already been announced that the 11th Summit will take place in Croatia in 2026.

We cordially invite you to take part in the Three Seas Local Government Congress! Registration will open in the end of January. More details will soon be available at www.congress.lubelskie.pl and on our social media channels.